Which of the following is an exception to Mendelism?

What percentage of homozygous $Rh^{-}$ children will be born to a couple where the husband is heterozygous for $Rh^{+}$ and the wife is homozygous for $Rh^{-}$ (in $, \%$)?

Why does a new organism differ from its parents in its characteristics?

$A$ diseased man marries a normal woman and they get three daughters and five sons. All the daughters were diseased and sons were normal. The gene of this disease is

Select the correct option for the following statements:
$P - F_1$ generation shows traits of both parents.
$Q - F_1$ generation shows a new trait (intermediate).
$R - F_1$ generation shows only one of the two parental traits.
$\quad \quad P \quad Q \quad R$

The presence of four horns instead of two in a goat is an example of what?